MikeRJ
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| posted on 17/3/10 at 12:18 AM |
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Master Cylinder fittings
I have acquired a new master cylinder that I've been told is for an old Nissan pickup with drum brakes. The bore is 19mm, so should be good for
the non-servo use on my Striker. However, I'm a bit puzzled about the fittings:
 
Nissan Master Cylinder
One port has a very deep thread (~16mm) with no seat. I'm guessing a banjo bolt and sealing washers would have been used here? It also seems to
have some kind of valve at the bottom that appears to function like a residual pressure valve.
 
Master cylinder fitting 2
The other port has a short thread (~8-9mm), with a reverse tapered seat at the bottom. Can I put a double flare on a pipe and (safely) use it with a
conventional tube nut?
 
Master cylinder fitting
I think the thread is 3/8 UNF, it's certainly too coarse to be M10 * 1.0. In all other respects this fit my pedalbox perfectly, so would like to
use it if possible,
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indykid
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| posted on 17/3/10 at 12:45 AM |
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looks like a banjo fittinga nd a double flare to me, similar to an mx5.
all the mx5 fittings are like that with the convex seat and double flared. all my flares i made at the rear have sealed and stayed sealed.
could the fittings be m10x1.25? can't imagine nissan would use imperial, even in the days of yore
tom
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MikeRJ
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| posted on 17/3/10 at 01:00 AM |
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quote:
Originally posted by indykid
looks like a banjo fittinga nd a double flare to me, similar to an mx5.
all the mx5 fittings are like that with the convex seat and double flared. all my flares i made at the rear have sealed and stayed sealed.
could the fittings be m10x1.25? can't imagine nissan would use imperial, even in the days of yore
tom
Could well be M10x1.25 now you mention it, but I didn't realise that size was ever used on brakes! Sounds like I can probably use it then, good
news.
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russbost
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| posted on 17/3/10 at 09:19 AM |
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3/8 & m10 x 1.0 are almost indistinguishable, you can actually screw a 3/8 male into a m10 x 1.0 female (tho' I wouldn't recommend
it)
M10 x 1.25 is very commonly used on Jap motorbikes tho' only ever seen it on cars on old Fiats & their derivatives like Lada,FSO etc
The deep hole would be a banjo fitting, the others take a standard double flare (OP2)
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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MikeRJ
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| posted on 17/3/10 at 10:22 AM |
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quote:
Originally posted by russbost
3/8 & m10 x 1.0 are almost indistinguishable, you can actually screw a 3/8 male into a m10 x 1.0 female (tho' I wouldn't recommend
it)
In that case it's definitely not 3/8 since the thread pitch is visibly coarser than an M10x1.0 banjo bolt I tried in it. Somewhere I have a
Metric thread gauge, but darned if I could find it last night.
Seems like banjo bolts are fairly easily available in M10 x 1.25, but the fittings for solid brake pipe don't seem very common.
[Edited on 17/3/10 by MikeRJ]
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iank
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| posted on 17/3/10 at 11:20 AM |
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Rally Design stock them
http://www.rallydesign.co.uk/product_info.php?cPath=85_1923_1210&products_id=9955
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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whitestu
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| posted on 17/3/10 at 11:20 AM |
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I'm fairly sure my Fiat MC needed m10 x 1.25. I managed to get hold of some easy enough, but can't remember where from!
Stu
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MikeRJ
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| posted on 17/3/10 at 11:52 AM |
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quote:
Originally posted by iank
Rally Design stock them
http://www.rallydesign.co.uk/product_info.php?cPath=85_1923_1210&products_id=9955
I ordered a bunch of stuff from RD a couple of days ago, how typical 
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Bluemoon
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| posted on 17/3/10 at 12:27 PM |
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quote:
Originally posted by MikeRJ
quote:
Originally posted by iank
Rally Design stock them
http://www.rallydesign.co.uk/product_info.php?cPath=85_1923_1210&products_id=9955
I ordered a bunch of stuff from RD a couple of days ago, how typical
Talk to them on the phone, bet you will get cheaper postage (than on-line)...
Dan
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MikeRJ
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| posted on 18/3/10 at 11:22 PM |
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Thanks for the help chaps, I discovered my tap and die set had an M10x1.25 tap and it fits perfectly. I've ordered a banjo bolt, banjo adapter
and a couple of M10x1.25 male brake fittings so I should be ready to work on the car during the lovely weather we are surely going to get at Easter 
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